This depends on how they are stored since our potatoes contain no preservatives. Generally speaking, potatoes should last several weeks as long as they are stored in a cool, dark place. The optimum temperature is 45-55 degrees F, and darkness ensures the potatoes won’t “wake up” and produce chemicals that can taste bitter. Storing them in a refrigerator is not a good idea as it allows starches in the potatoes to break down into sugars, which can affect the flavor. Your potatoes should be good to use as long as they are not soft and breaking down.